一种城市鸟类多个种群形态多样性的复杂模式。

IF 3.1 2区 环境科学与生态学 Q2 ECOLOGY
Evolution Pub Date : 2024-07-01 DOI:10.1093/evolut/qpae067
Eleanor S Diamant, Pamela J Yeh
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引用次数: 0

摘要

城市化是一个自然进化实验,因为城市中的选择压力与物种历史栖息地中的选择压力极不匹配。然而,一些物种设法适应了这些新条件,甚至茁壮成长。当一个物种在多个城市持续生存时,就会出现一个基本问题:在类似的新环境下,我们是否会看到类似的性状进化?通过测试多个城市种群是否以及如何出现相似的表型,我们可以开始评估种群对人为变化的反应的可预测性。在这里,我们研究了一种鸣禽--黑眼杜鹃(Junco hyemalis)在多个种群内和种群间的变化。我们测量了南加州城市和非城市种群中杜鹃的形态变化。我们研究了我们观察到的变化是否是由于不同城市环境条件的差异造成的。不同城市种群的鸟喙形状各不相同;洛杉矶和圣巴巴拉的金鸡比非城市种群的金鸡鸟喙更短、更深,但圣地亚哥的金鸡则不然。另一方面,翅膀长度随着建筑环境的变化而减少,与种群无关。南加州城市松鸦在形态特征上既有相似之处,也有不同之处。研究多个城市种群有助于我们确定表型进化对新环境的可预测性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Complex patterns of morphological diversity across multiple populations of an urban bird species.

Urbanization presents a natural evolutionary experiment because selection pressures in cities can be strongly mismatched with those found in species' historic habitats. However, some species have managed to adapt and even thrive in these novel conditions. When a species persists across multiple cities, a fundamental question arises: do we see similar traits evolve in similar novel environments? By testing if and how similar phenotypes emerge across multiple urban populations, we can begin to assess the predictability of population response to anthropogenic change. Here, we examine variation within and across multiple populations of a songbird, the dark-eyed junco (Junco hyemalis). We measured morphological variations in juncos across urban and nonurban populations in Southern California. We investigated whether the variations we observed were due to differences in environmental conditions across cities. Bill shape differed across urban populations; Los Angeles and Santa Barbara juncos had shorter, deeper bills than nonurban juncos, but San Diego juncos did not. On the other hand, wing length decreased with the built environment, regardless of the population. Southern Californian urban juncos exhibit both similarities and differences in morphological traits. Studying multiple urban populations can help us determine the predictability of phenotypic evolutionary responses to novel environments.

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来源期刊
Evolution
Evolution 环境科学-进化生物学
CiteScore
5.00
自引率
9.10%
发文量
0
审稿时长
3-6 weeks
期刊介绍: Evolution, published for the Society for the Study of Evolution, is the premier publication devoted to the study of organic evolution and the integration of the various fields of science concerned with evolution. The journal presents significant and original results that extend our understanding of evolutionary phenomena and processes.
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